Marginal printing plate



May 29; 1923. 1,456,936

' L.v A DT Patented May 29, 1923.

U IT D srars rarer .FHCe.;;

LOUISA. SGI-IMIDTLOFNEW- YORK, N. Y.,-AssIG1voaro 1a. non AND do, or ivnw YORK,

- Y nxv Aoonrona'rron 0F'1\TEW Y0RK.

MAR INAL PRINTING PLATE;

Original-application filed December To all whom it may concern Be it known that I, LoUIs A. Soriunrr,

In a copending application Serial 519,042, filed December,1, 1921, of which this application is a .division, there is disclosed a device for marginal printing, that is, a device by which the margin space usually formed between two printing plates is utilized for printing In-theapplication above identified, this marginal. printing device is-in the formof a narrow supplemental plate arranged to .be placed inthe margin space at one side of, a main printing plate or between two main printing plates, and,

this narrow supplemental plate g may be locked .up by a sidewise movement of the plates widthwise of the cylinder as described therein. i

Under some circumstances, however, it is desirable to eifect a lock up of thesesupple mental plates 'by a movement independent of or additional to the sidevvise lockup,- and it is the especial object of the present invention to provide a simple construction whereby a circumferential locking movement may be given the narrow supplemental plates independent of the sidewise lock up. With this and other objects not specifically referred to in view, the invention consists in certain novel parts and arrangements which will-be fully described in connection with the accompanying-drawings, and the novel features pointed out in the claims hereunto annexed.

In these drawings- Figure 1 is a sectional end view of the improved construction for efiecting the lock up of the plate, the plate being shown in unlocked position.

Figure 2 is a similar view showing the plate locked.

Figure 3 is a detail sectional view taken on line 3-3 of Fig. 2.

Figure 4 is a detail sectional View taken on line 4-4 of Fig. 2.

Referrin now to these drawings, there is shown. a plate support in the of a cylinder 1, this cylinder. being of any usual-or desired construction. Supported 1, 1921, Serial naelaota Divided and this application filed n v iber 28,1922. Serial Ito- 603,755. i j

on this cylinder is a main. printing" surface which, inthe particular construction illustrated, includesa pair of main print-. ing plates 2, 8 Spacingthese plates are stops in the form of sliding blocks 4. These blocks, in the particular. construction illus-' trated have a sliding movement widthwise of the cylinder, as by fro ds'5, manipulated in any suitable manner, as for. instance,

the construction illustrated in. my copendin application above referred to. I Ihese blocks act to provide "a margin' space between the main plates, and inthis margin space is positioned a supplemental plate, this supplemental plate being. marked 6. and provided -with a printing surface which extends substantially across the'inargin space when the plates arein locked position, this printing-surface being unbroken. In accordance .with the I invention, means are provided whereby the supplemental,

plate 6 may be given a locking movement independent of any movement it may have widthwise of the ,cylinder,.andi the particular construction illustrated,-jthis movement isone circumferentially. of the plate support sothat the-plates maybe locked in position relatively-to the main, plates and then, if desired, given a movement sidewise of the cylinder relatively to or with the'main plates to effect a final lock up While the specific construction for effe'cting this may be somewhat varied, in the particular construction shown, the supplemental plate is cast with a flange or projection 7, this flange extending preferably circumferentially of the plate, clear spaces 8 being left on each side of this flange at intevals along the plate. At suitable intervals between the spaces this flange is widened,'as indicated at 9, and these widened portions are formed with bevelled sides, indicated at 10 forming locking shoulders.

into a groove 11, having correspondingly bevelled sides 12 formed in the blocks 4, it being understood that these blocks are provided in suflicient numbers about the cylinder. Withthis construction the plate may be locked in positionin the blocks by p a movement circumferentially of the cyline These bevelled sides are arranged to take j der by placing it in the position shown in Fig. 1 in which position the narrow part of the projection 7 will lie in the groove of 'the block, and then rotating the plate to the position shown in 2, this rotation of the plate bringing the thickened portion 9 of the projection 7 in under the sides of the groove in the block. Vith this construction, therefore, the plate may be readily placed in and removed from its printing position on the cylinder. After the plate has been positioned, the blocks, as before stated, may be moved, if desired, widthwise of the cylinder to lock up the two main plates.

YVith the construction illustrated and described, a very simple construction has "been provided for mounting the supplemental plates on andremoving them from the cylinder, and while the invention has been shown in its preferred form, it will be understood that certain changes and variations may be made in the particular structure and arrangement illustrated, and that the invention is not to be limited to this.

" What I claim is. v

1. In a marginal printing mechanism, the combination with a plate support, of a main printing plate mounted thereon so asto leave a margin space at one end of the plate, a-

supplmental printing plate secured on the support and having an unbroken printing surface for printing in the margin space at theend of "the main plate, and means for locking up the supplemental plate by giving the plate a movement circumferen tially of the plate support.

2. In a marginal printing mechanism, the combination with a plate support, of a pair of printing plates on the support arranged end to end with a margin space between, a narrower supplemental printing plate in the margin space between the plates, means for effecting a sidewise movement of the supple mental plate and main plates, and means for effecting a locking'of the Supplemental late .bOmbination with a plate support, of a pair of printing plates on the support arranged end to end with a margin space between, a

narrower supplemental printing plate in the margin space between the plates, means for effecting a side lock up ofy'the supplemental and main plates, and means for locking up the supplemental plate by a- 1novemcnt-circumferentially of the plate support.

4. In a marginal printing mechanism, the combination with a curved plate support, of a. pair of printing plates on the support, blocks in the support spacing the plates to form a margin, a narrower supplemental printing plate for printing in the margin, a groove in the blocks having locking shoulders, and a projection on the plate having widened portions engagealole with the shoulders by a circumferential movement of'the'plate.

5. In a marginal printing mechanism, the combination with a curved platesupport, of a pair of printing-plates on the support, blocks in the .supportspacing the plates to form a margin, a narrower supplemental plate for printing in the margin, projections onthe block having outer bevelled sides and inner sides formed to provide locking shoulders on each side "of a groove extending between them,land a projection on the plate having widened portions engageable with the shoulders by a 'circumfe'rential movement'of the plate. V

In testimony whereof, I have hereunto set my hand.

I O'UIS A. SCHMIDT; i 

